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  +------------------------------------------------------------------------
  |
  |      RETRO-REPLAY-Cartridge [<A HREF="http://rr.c64.org">http://rr.c64.org</A>]:
  |
  +------------------------------------------------------------------------
  |
  | Used I/O-Area:
  |
  |   <A HREF="RR00.HTM">$DE00/56832/RR+0</A>       Control-Register
  |   <A HREF="RR01.HTM">$DE01/56833/RR+1</A>       Extended Control-Register
  |
  |  If SilverSurfer(RS232) present:
  |
  |   <A HREF="RR08.HTM">$DE08/56840/RR+8</A>       Receive/Transmit Buffer
  |                          Baud Rate Divisor LSB
  |   <A HREF="RR09.HTM">$DE09/56841/RR+9</A>       Interrupt Enable Register
  |                          Baud Rate Divisor MSB
  |   <A HREF="RR0A.HTM">$DE0A/56842/RR+10</A>      Interrupt Identification Register (read)
  |                          FIFO Control Register (write)
  |   <A HREF="RR0B.HTM">$DE0B/56843/RR+11</A>      Line Control Register
  |   <A HREF="RR0C.HTM">$DE0C/56844/RR+12</A>      Modem Control Register
  |   <A HREF="RR0D.HTM">$DE0D/56845/RR+13</A>      Line Status Register (read only)
  |   <A HREF="RR0E.HTM">$DE0E/56846/RR+14</A>      Modem Status Register (read only)
  |   <A HREF="RR0F.HTM">$DE0F/56847/RR+15</A>      Scratch Pad Register
  |
  | Used KERNAL-vectors:
  |
  |   (Software is still under development, so vectors will change
  |    between releases.)
  |
  | <A HREF="RRMEM.HTM">Memory Maps</A>
  |
  +------------------------------------------------------------------------

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